Touch sensor

ABSTRACT

A touch sensor comprises a first electrode, a second electrode arranged spaced apart from the first electrode, and an insulator arranged between the first electrode and the second electrode, wherein at least one of the first electrode and the second electrode is energized, and an energy difference exists between the first electrode and the second electrode. At least one of the first electrode and the second electrode is a stressed electrode. When the stressed electrode is not stressed, no electrical signal is generated, and when the stressed electrode is stressed, the stressed electrode deforms at a stressed point and changes the distance between the stressed point and the other electrode to generate a tunneling current, and the touch sensor generates the electrical signal according to whether the tunneling current is generated. Therefore, the invention solves a limitation of the conventional touch sensor in touching and provides good touching sensitivity.

FIELD OF THE INVENTION

The invention relates to a touch sensor, in particular to a touch sensorfor detecting a touch through tunneling current generated by distancechange between electrodes.

BACKGROUND OF THE INVENTION

At present, the touch control devices on the market use the principlesof capacitance, resistance, piezoelectric and the like to control. Inthe case of the capacitive touch device, the touch device must beoperated by a conductor during touch operation, and the capacitive touchdevice cannot be operated when the touch body is not a conductor. Forexample, although a finger can be used as the touch body, the capacitivetouch device cannot be controlled when a glove is worn on the hand of auser. In addition, in the case of the resistive touch device, theresistive touch device is mainly formed by conductive lamination of anupper group of ITO and a lower group of ITO, when the resistive touchdevice is used, the upper electrode and the lower electrode arecontacted and conducted through pressure, and the position of thecontact point is calculated by sensing the voltage change of the panelthrough an internal controller. Besides, the resistance type touchdevice is a kind of contact touch device, and the contact touch devicetends to have the problems of accuracy and sensitivity, for example, theprecision is relatively poor when the resistance type touch device isused for drawing. Also, the resistance type touch control devices aremostly single-point touch control, and although the multi-point touchcontrol devices exist currently, the resolution of the devices is poor.Moreover, although the defects of the capacitive touch panel and theresistive touch panel can be improved by a composition touch panel,which is combined by the capacitive touch and the resistive touch, thethickness of the touch panel cannot be lightened and thinned. On theother hand, the piezoelectric touch device takes a piezoelectricmaterial as a basic structure of a panel. The signal control of thepiezoelectric material is unstable, and the problems of operationaccuracy, sensitivity and the like are easy to occur. Yet most currentpiezoelectric materials are not optical grade materials and are notsuitable for use on touch panels.

Further, the patents CN 107562235A, CN 108255296A and U.S. Ser. No.10/296,047B provide the touch control devices which do not conduct theupper electrode and the lower electrode by the above-mentionedprinciple. As mentioned in the disclosure of the foregoing patent, theymainly uses a plurality of conductive particles arranged between theupper electrode and the lower electrode, and the upper electrode and thelower electrode are conducted by shortening the distance between theconductive particles. However, in these conventional methods, thestressed position of the touch device cannot be accurately detected, sothat the touch device still has the problems of insufficient operationaccuracy or sensitivity and the like.

SUMMARY OF THE INVENTION

The main object of the invention is to solve the problems of theconventional touch control device that the touch control is limited andthe resolution is insufficient.

To achieve the above object, the invention provides a touch sensorincluding a first electrode; a second electrode arranged correspondingto the first electrode without in contact with the first electrode, andan energy transmission distance located between the second electrode andthe first electrode, wherein at least one of the first electrode and thesecond electrode is energized, and an energy difference is existedbetween the first electrode and the second electrode; and an insulatorarranged between the first electrode and the second electrode; whereinat least one of the first electrode and the second electrode is astressed electrode, when the stressed electrode is not stressed, adistance between the first electrode and the second electrode is smallerthan the energy transmission distance to generate a tunneling current,and the touch sensor continuously generates an electrical signal and thetouch sensor is performed as an untouched state; when the stressedelectrode is stressed to deform at a stressed point, a distance betweenthe stressed point and the other electrode is changed; when the distancebetween the first electrode and the second electrode is larger than theenergy transmission distance to stop a generation of the tunnelingcurrent, the electrical signal is changed for the touch sensor to detectthat the touch sensor is touched.

In one embodiment, the insulator is a gas or a tangible object.

In one embodiment, the insulator is a gas, the touch sensor comprises aspacer arranged between the first electrode and the second electrode,and at least one gas hole for accommodating the gas is arranged on thespacer.

In one embodiment, the touch sensor comprises a first substrate disposedon a side of the first electrode opposite to the insulator and a secondsubstrate disposed on a side of the second electrode opposite to theinsulator.

In one embodiment, the first electrode and the second electrode arerespectively provided with a plurality of conductive lines in highdensity.

In one embodiment, the first electrode comprises a plurality of firstsub-electrodes which share the same first substrate, and the secondelectrode comprises a plurality of second sub-electrodes which share thesame second substrate.

In one embodiment, the first substrate comprises a plurality of firstsub-substrates which share the same first electrode, and the secondsubstrate comprises a plurality of second sub-substrates which share thesame second electrode.

In one embodiment, the first substrate comprises a plurality of firstsub-substrates arranged in parallel and spaced apart, and the secondsubstrate comprises a plurality of second sub-substrates arranged inparallel and spaced apart, each of the plurality of first sub-substrateshas a first extending direction, and each of the plurality of secondsub-substrates has a second extending direction perpendicular to thefirst extending direction.

According to the aforesaid features, the invention has the followingcharacteristics compared with the conventional technique. A touchcontroller of the touch sensor provided by the invention is not limitedto be a conductor or a non-conductor, and the tunneling current isgenerated only in a condition that a certain distance is achieved. Also,the magnitude of the tunneling current is more related to the forceapplied by the touch controller, so that the touch sensor is able toperform more specific touch identification. Furthermore, the operationaccuracy and sensitivity of the touch sensor of the invention are betterthan those of a touch sensor which is conventionally implemented by aresistor structure or a capacitor structure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural schematic diagram of a first embodiment of theinvention.

FIG. 2 is a structural schematic diagram of a plurality of arrangementsof a first embodiment of the invention.

FIG. 3 is another structural schematic diagram of the first embodimentof the invention.

FIG. 4 is a status schematic diagram of the implementation of the firstembodiment of the invention.

FIG. 5 is a structural schematic diagram of a second embodiment of theinvention.

FIG. 6. is a status schematic diagram of the implementation of thesecond embodiment of the invention.

FIG. 7. is a structural schematic diagram of a third embodiment of theinvention.

FIG. 8 is a status schematic diagram of the implementation of the thirdembodiment of the invention.

FIG. 9 is a structural schematic diagram of a fourth embodiment of theinvention.

FIG. 10 is a structural schematic diagram of a fifth embodiment of theinvention.

FIG. 11 is a partially enlarged schematic diagram of the fifthembodiment of the invention.

FIG. 12 is a structural schematic diagram of a sixth embodiment of theinvention.

FIG. 13 is a structural schematic diagram of a seventh embodiment of theinvention.

FIG. 14 is a structural schematic diagram of a plurality of arrangementsof the seventh embodiment of the invention.

FIG. 15 is a structural schematic diagram of an eighth embodiment of theinvention.

FIG. 16 is a structural schematic diagram of a ninth embodiment of theinvention.

FIG. 17 is a structural schematic diagram of a tenth embodiment of theinvention.

FIG. 18 is a structural schematic diagram of an eleventh embodiment ofthe invention.

FIG. 19 is a structural schematic diagram of a twelfth embodiment of theinvention.

FIG. 20 is a structural schematic diagram of a thirteenth embodiment ofthe invention.

FIG. 21 is a structural schematic diagram of a fourteenth embodiment ofthe invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The detailed description and technical contents of the invention willnow be described with reference to the drawings as follows:

Referring to FIG. 1, FIG. 2, and FIG. 3, the invention provides a touchsensor 10, which can be applied to products of display-relatedindustries such as mobile phones, flat panels, industrial computers andthe like, and can form a product panel in a single number or beimplemented in a plurality of touch sensors 10 in practicalapplications. Further, a plurality of the touch sensors 10 are arrangedspaced apart, and are arranged in a regular or irregular manner, and thedrawings are not intended to limit the invention. In addition, when thetouch sensors 10 are implemented by plural, a touch module is formed,and the touch sensors 10 are arranged at appropriate intervals asdescribed. Each touch sensor 10 is respectively defined with positioninformation, so that when the touch module is implemented, the positionwhere the touch is generated can be known on the basis of the positioninformation.

The touch sensor 10 comprises a first electrode 11, a second electrode12 and an insulator 13, wherein the first electrode 11 and the secondelectrode 12 have conductive properties. For example, the firstelectrode 11 and the second electrode 12 are respectively a materialcontaining silver nanowires (AgNW), a material containing indium tinoxide (ITO), a copper material or a silver material and the like. In oneembodiment, the resistivity of both the first electrode 11 and thesecond electrode 12 is less than 10² ohm-meter. Further, the firstelectrode 11 and the second electrode 12 are spaced apart, and the firstelectrode 11 and the second electrode 12 are arranged horizontally ornon-horizontally with respect to each other, as shown in FIG. 1 and FIG.3. Further, whether the first electrode 11 and the second electrode 12of the invention are provided in any of the above-mentioned manners, thefirst electrode 11 and the second electrode 12 are not in contact witheach other. In order to describe the implementation of the firstelectrode 11 and the second electrode 12 conveniently, a horizontalarrangement between the first electrode 11 and the second electrode 12will be exemplified as follow. In one embodiment, at least one of thefirst electrode 11 and the second electrode 12 is energized, forexample, the first electrode 11 is not additionally energized, and thesecond electrode 12 is additionally energized, so that an energydifference exists between the first electrode 11 and the secondelectrode 12. That is, the first electrode 11 has a low potential andthe second electrode 12 has a high potential. Conversely, in anotherembodiment, the second electrode 12 is designed to have a low potential,and the first electrode 11 is energized to have a high potential.Furthermore, in one embodiment, the first electrode 11 and the secondelectrode 12 are designed to be energized, but the energy of the firstelectrode 11 is different from the energy of the second electrode 12, sothat there is also an energy difference between the first electrode 11and the second electrode 12. Further, the energy difference between thefirst electrode 11 and the second electrode 12 is not sufficient tocause electrons in the first electrode 11 or electrons in the secondelectrode 12 to form a current across the insulator 13. In other words,when the first electrode 11 and the second electrode 12 are unstressed,the touch sensor 10 is in a steady state without substantial energytransmission between the two electrodes.

In addition, the insulator 13 is arranged between the first electrode 11and the second electrode 12, the resistivity of the insulator 13 islarger than that of the first electrode 11 and the second electrode 12,and the insulator 13 is implemented in a deformable and good elasticrecovery tangible object such as silica gel, acryl force or anintangible object such as gas. In one embodiment, the insulator 13 isactually a substance which is not additionally doped with a conductivematerial. The resistivity of the insulator 13 remains unchanged whendeformed under compression, and the resistivity of the tangiblesubstance being greater than 10² ohm-meter. Accordingly, when theinsulator 13 is compressed, the insulator 13 is deformed to change thedistance between the first electrode 11 and the second electrode 12, andwhen the insulator 13 is not compressed, the insulator 13 is restored,and the distance between the first electrode 11 and the second electrode12 is restored to the original distance. In one embodiment, theinsulator 13 has a thickness of about 0.01 nm to 500 μm.

Further, at least one of the first electrode 11 and the second electrode12 is a stressed when the touch sensor 10 is implemented. In order todescribe conveniently, the second electrode 12 is assumed as thestressed electrode. When the second electrode 12 is not stressed,although there is an energy difference between the second electrode 12and the first electrode 11, there is no energy transmission between thesecond electrode 12 and the first electrode 11, and the touch sensor 10does not generate an electrical signal (not shown in the figures). Afterthat, the second electrode 12 is deformed by an external force at astressed point 121, and the distance between the stressed point 121 andthe first electrode 11 is changed along with the application of theexternal force. Specifically, the stressed point 121 referred to hereinis a stressed position of the second electrode 12 instead of a singlepoint. Furthermore, in the invention, the force direction of thestressed electrode is not limited. Also, whether the touch sensor 10generates energy transmission or not is determined by the change in thevertical distance between the first electrode 11 and the secondelectrode 12. For example, as shown in FIG. 4, an external force 20experienced by the second electrode 12 is at a 45 degree angle withrespect to the second electrode 12, wherein the external force 20 isresolved into a first component 201 at a 45 degree angle with respect tothe external force 20 and parallel to the second electrode 12, and asecond component 202 at a 45 degree angle with respect to the externalforce 20 and perpendicular to the second electrode 12. Furthermore, thesecond electrode 12 is subjected to the second component 202 to displacethe stressed point 121 in a direction facing the first electrode 11, sothat the distance between the stressed point 121 and the first electrode11 is changed, but the second electrode 12 is not yet in contact withthe first electrode 11. The second electrode 12 is continually subjectedto the force to displace the stressed point 121 continually in adirection facing the first electrode 11. When the distance between thestressed point 121 and the first electrode 11 reaches an energytransmission distance 14, a tunneling current 15 is generated betweenthe first electrode 11 and the second electrode 12, so that currentflows between the first electrode 11 and the second electrode 12.Furthermore, the touch sensor 10 generates the electrical signal, andthe touch sensor 10 enters a touched state. The tunneling current 15 iscalculated as follows:

I∝e^(−2kd), where I is the tunneling current 15, k is the wave number,and d is the distance between the first electrode 11 and the secondelectrode 12.

As described above, the magnitude of the electrical signal is positivelycorrelated with the magnitude of the force applied on the stressedelectrode (i.e. the second electrode 12 as described above). That is,the larger the electrical signal, the larger the external force 20applied on the second electrode 12, causing more electrons in the twoelectrodes being transferred to each other. Thus, the tunneling current15 increases with touch control. Furthermore, the touch sensor 10performs signal processing such as signal amplification, signalconversion and the like with respect to the electrical signal.

Please refer to FIG. 5 and FIG. 6. As mentioned above, the insulator 13of the invention can also be implemented as an intangible object,exemplified by a gas hereinafter. In the embodiment, the resistivity ofthe gas is greater than the first electrode 11 and the second electrode12, for example, the gas is an inert gas, a nitrogen gas or the like. Inthe embodiment, a hermetic space 161 is defined in the touch sensor 10.The hermetic space 161 is formed by the first electrode 11, the secondelectrode 12, and at least one spacer 16 sandwiched between the firstelectrode 11 and the second electrode 12. For example, the spacer 16 isimplemented as a single sheet of material, and the spacer 16 is providedwith at least one gas hole 162. When the spacer 16 is assembled with thefirst electrode 11 and the second electrode 12, two ends of the gas hole162 are respectively shielded by the first electrode 11 and the secondelectrode 12 to be closed. Accordingly, the gas in the gas hole 162 isimplemented as the insulator 13. Further, the gas holes 162 is formed byapplying yellow light, laser light, printing, etching, etc. to thespacer 16. In addition, in one embodiment, the spacer 16 is implementedby plural, at least one hollowed area (not shown) is defined through thepositions where the spacer 16 is placed, and the purpose of the hollowedarea is the same as that of the gas hole 162, which is not described indetail herein. Accordingly, the stressed electrode (exemplified by thesecond electrode 12) is deformed by the external pressure, and thehermetic space 161 is reduced in volume by the external pressure whilethe second electrode 12 is deformed, so that the air pressure in thehermetic space 161 is increased. When the external force 20 is released,the second electrode 12 is restored by itself, and the volume of thehermetic space 161 returns to its original volume. In other embodiment,the gas is exemplified by a composition of air, and the electricalresistivity thereof is about 3×10¹³ ohm-meter. Although the electricalresistivity of the gas is different due to the presence of water andtemperature, the gas still has a large electrical resistivity withrespect to the first electrode 11 and the second electrode 12.

According to the foregoing description, the touch sensor 10 detects atouch by the generation of the tunneling current 15; and based on thesame technical concept, the touch sensor 10 is also able to detect atouch by no tunneling current 15 is generated, Please refer to FIG. 7,FIG. 8, and FIG. 9, in one embodiment, the touch sensor 10 includes thefirst electrode 11, the second electrode 12, and the insulator 13. Thefirst electrode 11 is disposed corresponding to the second electrode 12without contacting the second electrode 12. The first electrode 11 andthe second electrode 12 is disposed in a horizontal or non-horizontalmanner. At least one of the first electrode 11 and the second electrode12 is energized, and the energy transmission distance 14 is generatedbetween the first electrode 11 and the second electrode 12. As mentionedabove, when the distance between the first electrode 11 and the secondelectrode 12 is less than the energy transmission distance 14, energytransmission will occur between the first electrode 11 and the secondelectrode 12 with the tunneling current 15. However, in the embodiment,the distance between the first electrode 11 and the second electrode 12is shorter than the energy transmission distance 14 when the touchsensor 10 is assembled, that is, the touch sensor 10 generates theelectrical signal when it is not touched. In the embodiment, at leastone of the first electrode 11 and the second electrode 12 is used as thestressed electrode, and when either one of the first electrode 11 andthe second electrode 12 is not stressed, the touch sensor 10 is in asteady state to generate the electrical signal. That is, the touchsensor 10 in this embodiment does not detect the touch based on thegeneration of the electrical signal, but the steady state thatgenerating the electrical signal is considered to be untouched.Furthermore, a pulling force is applied by the touch operator in thisembodiment, which is different from that in the previous embodiment. Forexample, the touch operator is an object having a suction force. Whilethe touch operator applies a force to the stressed electrode, thesuction force is regarded as the pulling force to the stressedelectrode, and the stressed point 121 is gradually displaced opposite tothe other direction, that is, the distance between two electrodesbecomes larger. When the stressed electrode continuously bears thepulling force, the distance between the stressed point 121 and the otherelectrode is larger than the energy transmission distance 14 to stop thegeneration of the tunneling current 15. Thus, the electrical signalgenerated by the touch sensor 10 is changed, and the touch sensor 10 isable to detect a touch through the change of the electrical signal.

As a result, the touch sensor 10 of the invention no longer limits atouch controller to be a conductor or a non-conductor. Beside, since thetunneling current 15 is generated by a certain distance between theelectrodes is reached, the magnitude of the tunneling current 15 is morerelated to the force applied by the touch controller, so that the touchsensor 10 is allowed to detect more specifically. Moreover, theoperational accuracy and sensitivity of the touch sensor 10 of theinvention are also superior to those of conventional touch sensorsimplemented in resistive or capacitive configurations. Furthermore, inone embodiment, the touch sensor 10 of the invention is implemented inconjunction with a display structure. The display structure comprises anindependent substrate, or in other embodiment, the first electrode 11 orthe second electrode 12 is regarded as the substrate required for thedisplay structure, and provided for the display structure to be stackedthereon.

Referring to FIG. 10, FIG. 11, and FIG. 12, in order to enhance theability of the invention to sense the electrical signal, the firstelectrode 11 and the second electrode 12 are respectively provided witha plurality of conductive lines 113, 124 in a high density, theconductive lines 113,124 are respectively randomly arranged in the firstelectrode 11 and the second electrode 12 in vertical, and one end ofeach conductive line 113 (124) faces the insulator 13. In oneembodiment, the conductive lines 113,124 are the nano-silver lines,respectively.

Referring to FIG. 13, FIG. 14, FIG. 15, FIG. 16, FIG. 17, FIG. 18, FIG.19, FIG. 20, and FIG. 21, in one embodiment, the touch sensor 10 furtherincludes a first substrate 111 disposed on a side of the first electrode11 opposite to the insulator 13 and a second substrate 122 disposed on aside of the second electrode 12 opposite to the insulator 13. Referringto FIG. 14, in the embodiment, the touch sensor 10 is not limited to beimplemented independently; however, the touch sensor 10 is implementedby plural as the touch module described above.

Accordingly, in one embodiment, the first substrate 111 and the secondsubstrate 122 are implemented as non-conductors, and once a touchcontroller contacts the second substrate 122 (or the first substrate111), the overall capacitance value of the touch sensor 10 is changed,thereby determining whether the touch controller is a conductor or anon-conductor.

Thus, in one embodiment, the second electrode 12 is implemented as aplurality of sub-cells, i.e., the second electrode 12 comprises aplurality of second sub-electrodes 125 spaced apart on the secondsubstrate 122, wherein the plurality of second sub-electrodes 125 sharethe same second substrate 122, as shown in FIG. 16. Also, referring toFIG. 17, in the embodiment, in addition to second electrode 12 beingimplemented by the second sub-electrodes 125, the insulator 13 alsocomprises a plurality of sub-units, and the sub-units of the insulator13 are spaced apart from each other while the insulator 13 isimplemented as a tangible object. When the insulators 13 are gas, aplurality of hermetic spaces 161 are defined by the structure of thetouch sensor 10, and the plurality of hermetic spaces 161 are notcommunicated with each other. Further, referring to FIG. 18, the firstelectrode 11 also comprises a plurality of first sub-electrodes 112,which are arranged on the first substrate 111. The plurality of firstsub-electrodes 112 are spaced apart from each other and share the samefirst substrate 111. Therefore, the touch sensor 10 is able to detectthe position of the stressed point 121 more specifically.

Furthermore, the plurality of first sub-electrodes 112 and the pluralityof second sub-electrodes 125 described herein are not limited toblock-shape, but in one embodiment, the plurality of firstsub-electrodes 112 and the plurality of second sub-electrodes 125 areformed in strips, as shown in FIG. 19. The extending direction of theplurality of first sub-electrodes 112 and the extending direction of theplurality of second sub-electrodes 125 are perpendicular to each other.Referring to FIG. 19, the plurality of first sub-electrodes 112 arearranged parallel to the X-axis direction, and the plurality of secondsub-electrodes 125 are arranged parallel to the Y-axis direction. Thesignal changes in the Y-axis direction and the X-axis direction aredetected by the plurality of first sub-electrodes 112 and the pluralityof second sub-electrodes 125 in different directions. In addition,according to the embodiment, the signal change in the Z-axis directionis defined as the relative signal change between the first substrate 111with the second substrate 122.

In addition, referring to FIG. 20 and FIG. 21, in one embodiment, whenthe two substrates of the touch sensor 10 are implemented asnon-conductors or conductors, the first substrate 111 comprises aplurality of first sub-substrates 114 which are arranged on the firstelectrode 11 and spaced apart from each other, and the plurality offirst sub-substrates 114 share the same first electrode 11. On the otherhand, the second substrate 122 also comprises a plurality of secondsub-substrates 123 which are arranged on the second electrode 12 andspaced apart from each other, and the plurality of second sub-substrates123 share the same second electrode 12.

Furthermore, the plurality of first sub-substrate 114 and the pluralityof second sub-substrate 123 described herein are not limited toblock-shape, but in one embodiment, the plurality of first sub-substrate114 and the plurality of second sub-substrate 123 are formed in strips,as shown in FIG. 21. Further, each of the plurality of firstsub-substrates 114 has a first extending direction 116, and each of theplurality of second sub-substrates 123 has a second extending direction127 perpendicular to the first extending direction 116. Therefore, thesignal changes in the Y-axis direction and the X-axis direction aredetected by the plurality of first sub-substrates 114 and the pluralityof second sub-substrates 123 with different directions. In addition, thesignal change in the Z-axis direction is defined as the relative signalchange between the first electrode 11 with the second electrode 12.

What is claimed is:
 1. A touch sensor, including: a first electrode; asecond electrode, arranged corresponding to the first electrode withoutin contact with the first electrode, and an energy transmission distancelocated between the second electrode and the first electrode, wherein atleast one of the first electrode and the second electrode is energized,and an energy difference is existed between the first electrode and thesecond electrode; and an insulator, arranged between the first electrodeand the second electrode; wherein at least one of the first electrodeand the second electrode is a stressed electrode, when the stressedelectrode is not stressed, a distance between the first electrode andthe second electrode is smaller than the energy transmission distance togenerate a tunneling current, and the touch sensor continuouslygenerates an electrical signal and the touch sensor is performed as anuntouched state; when the stressed electrode is stressed to deform at astressed point, a distance between the stressed point and the otherelectrode is changed; when the distance between the first electrode andthe second electrode is larger than the energy transmission distance tostop a generation of the tunneling current, the electrical signal ischanged for the touch sensor to detect that the touch sensor is touched.2. The touch sensor as claimed in claim 1, wherein the insulator is agas or a tangible object.
 3. The touch sensor as claimed in claim 1,wherein the insulator is a gas, the touch sensor comprises a spacerarranged between the first electrode and the second electrode, and atleast one gas hole for accommodating the gas is arranged on the spacer.4. The touch sensor as claimed in claim 3, wherein the touch sensorcomprises a first substrate disposed on a side of the first electrodeopposite to the insulator and a second substrate disposed on a side ofthe second electrode opposite to the insulator.
 5. The touch sensor asclaimed in claim 4, wherein the first electrode and the second electrodeare respectively provided with a plurality of conductive lines in highdensity.
 6. The touch sensor as claimed in claim 5, wherein the firstelectrode comprises a plurality of first sub-electrodes which share thesame first substrate, and the second electrode comprises a plurality ofsecond sub-electrodes which share the same second substrate.
 7. Thetouch sensor of claim 5, wherein the first substrate comprises aplurality of first sub-substrates which share the same first electrode,and the second substrate comprises a plurality of second sub-substrateswhich share the same second electrode.
 8. The touch sensor of claim 5,wherein the first substrate comprises a plurality of firstsub-substrates arranged in parallel and spaced apart, and the secondsubstrate comprises a plurality of second sub-substrates arranged inparallel and spaced apart, each of the plurality of first sub-substrateshas a first extending direction, and each of the plurality of secondsub-substrates has a second extending direction perpendicular to thefirst extending direction.
 9. The touch sensor of claim 4, wherein thefirst electrode comprises a plurality of first sub-electrodes, theplurality of first sub-electrodes share the same first substrate, andthe second electrode comprises a plurality of second sub-electrodes, theplurality of second sub-electrodes share the same second substrate. 10.The touch sensor of claim 4, wherein the first substrate is comprises aplurality of first sub-substrates, the plurality of first sub-substratesshare the same first electrode, and the second substrate comprises aplurality of second sub-substrates, and the plurality of secondsub-substrates sharing the same second electrode.
 11. The touch sensorof claim 4, wherein the first substrate is comprises a plurality offirst sub-substrates arranged in parallel and spaced apart, and thesecond substrate comprises of a plurality of second sub-substratesarranged in parallel and spaced apart, each of the plurality of firstsub-substrates has a first extending direction, and each of theplurality of second sub-substrates has a second extending directionperpendicular to the first extending direction.